Improvement in sash-fasteners



UNITED STATES PATENT OFFICE.

WILLIAM S. MALLORY, OF BATAVIA, NEW YORK.

IMPROVEMENT IN sAsH-FASTENERS.

Specication forming part of Letters Patent No. 39,737, dated September1, 18613.

To all whom it may concern,.-

Beit known that I, WILLIAM S. MALLORY, of Batavia, in the county ofGenesee and State of N ew York, have invented a new Sash- Fastener; andI do hereby declare that the following is a full and exact descriptionthereof, reference bein g had to the accompanying drawing, and to theletters of reference marked thereon.

The nature of my invention consists in so arranging a sash-fastener thatthe power eX- erted or act of raising the window will undo the fasteningand allow the window to be raised to the desired height, and held at anydesired elevation, and when the sash is down it is securely fastened soas not easily to be unfastened from the outside.

To enable others skilled in the art to make and use my said invention, Iwillproceed to describe the construction and operation of my improvedsash-fastener.

The drawing represents the sash down and securely fastened. I make athin plate of brass, cast-iron, or other suitable metal, and bed thesame in the inside of the lower part of the sash. It is about two-thirdsthe width of the window in length, and is pivoted or hung upon a screwat such a point in the lever that its weightat the outer end will holdthe fastening or lunar-shaped dog in the notch in the window-frame. Thedog is hung loosely upon a screw, and has a slot or opening in which thelever plays loosely, so that the dog may be detached from the notch inthe window-frame or suffered to remain there. I place two knobs orhandles upon the lower part of the sash-frame upon the inside, for theconvenience of using both hands to raise the window only one of them,however, is connected with the lever so as to operate it. Whenasufficient power is exerted upon this knob or handle to raise thewindow, the lever will be acted upon so as to detach the dog from thenotch in the window-frame and allow the window to be raised. l

In the drawing the lever is marked b, the dog a, the knobs by letters dand e, and the screw upon which the lever is piv-oted by the letter o.

Having thus described my invention, what I claim, aud desire to secureby Letters Patent, 1s-

The described arrangement ofthe lever b, fulcrum o, and knobs d and @,incombination with the cam-shaped hook or fastener, all arrangedsubstantially in the manner and for the purpose set forth.

W. L. MALLORY.

Witnesses H. U. SoPER, M. W. HEwI'rr.

